Question

Shalini has cut out circles of diameter 5/4 cm from an aluminium strip of demension 35/4 cm by 5/4cm. How many full circles can Shalini cut ? Also calculate the waste of the aluminium strip

Answer 1

No. of full circles can be cut = Area of aluminium strip / area of one circle
= (35/4 *5/4 )/(22/7 * 5/8* 5/8) = 35*5*7*8*8/4*4*22*5*5 =98/11 = 8 10/11.
So, No. of full circle = 8 and 10/11 cm^2 is the waste of aluminium strip.

Answer 2

Solution:-

Given:

Circle diameter = 1 1/4 cm

a luminum strip = 8 3/4 cm by 1 1/4 cm

area of aluminum strip = 35/4 cm × 5/4 cm = 35×5 / 4×4 = 175/16 cm²

area of circle = 3.14 × (5/4cm)² = 3.14 × 25/16 cm² = 78.5/16 cm²

175/16 cm² ÷ 78.5/16 cm² = 175/16 × 16/78.5 = 175/78.5 = 2 18/78.5

Shalini can cut 2 full circles.

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@GauravSaxena01